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Sub Zero Model 690 Refrigerator

My sub zero model 690 refrigerator (3) three years old has given me a blinking code on the display panel. It says "service" and where the temperature is displayed, the temperature goes from 38 degrees to "EC". Anybody know what this is before I call for a very expensive service?

Solved similar problem with Sub Zero Model 650

Our Sub-Zero 650 got a Service message last night with a "21 EC" error code. The fridge temperature was in the sixties.

We phoned Sub-Zero at 1-800-222-7820. It was 10pm on a weeknight Pacific Time but someone answered.

He said to clean the condenser. We did and the Service and EC messages disappeared. But the fridge temperature only went down to 48 overnight.

Two guys from tthe appliance store came over this afternoon and replaced three worn-out parts, including a heat exchanger manifold of an old design. They installed a new manifold that they expect will hold up much longer.

The unit was three years old--within warrantee--so there was no charge.

Thanks for the great information. Now I have the 800 number. I too cleaned my coil. I had a Frigidare refrigerator that I paid $500 for before this for 20 years and never did a thing to it. Amazing what $7000 will buy you. Thanks again.